Never a Wrong (Semantic) Version Again! - Ferry Huberts
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This document discusses semantic versioning and how it relates to backward compatibility in software. Semantic versioning uses major, minor, and micro numbers to indicate levels of backward compatibility between versions. Major versions contain incompatible changes, minor versions contain backward compatible changes for providers but not consumers, and micro versions contain backward compatible changes. Tools like bndtools can help manage semantic versions and compatibility.
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ABSTRACT
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Introduction of Cybersecurity with OSS at Code Europe 2024
I develop the Ruby programming language, RubyGems, and Bundler, which are package managers for Ruby. Today, I will introduce how to enhance the security of your application using open-source software (OSS) examples from Ruby and RubyGems.
The first topic is CVE (Common Vulnerabilities and Exposures). I have published CVEs many times. But what exactly is a CVE? I'll provide a basic understanding of CVEs and explain how to detect and handle vulnerabilities in OSS.
Next, let's discuss package managers. Package managers play a critical role in the OSS ecosystem. I'll explain how to manage library dependencies in your application.
I'll share insights into how the Ruby and RubyGems core team works to keep our ecosystem safe. By the end of this talk, you'll have a better understanding of how to safeguard your code.
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This document discusses simplifying web UX using OSGi modularity. It mentions coding tasks becoming quicker and easier using OSGi and controlling OSGi DS component instances. It provides links to GitHub pages for the Open Security Controller project and a blog post about controlling OSGi components. It concludes by thanking the audience and reminding them they are being watched.
OSGi for the data centre - Connecting OSGi to Kubernetes - Frank Lyaruu
This document discusses connecting the OSGi framework to Kubernetes for managing applications in container-based environments. It raises questions about building systems that can update while running and whether years spent on this have been wasted. It also briefly mentions a demo of OSGi and Kubernetes integration and asks why a load balancer wouldn't work instead. The document calls for feedback on sessions and ideas about OSGi, Kubernetes, immutable vs mutable systems, and J2EE versus OSGi.
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Abstract: With the proliferation of cloud computing and more recently mobile and edge computing, there is a increasing demand to build flexible and robust distributed applications. The OSGi service and module technology is a key enabler for such deployment. Recent additions to the OSGi standards provide a set of services that provide interfaces for managing distributed instances of OSGi frameworks. The REST Service (added in R6 compendium) offers an easy and language-independent way to manage bundes and introspect services from outside the network. The Cluster Information specifications (added in R7 compendium) provide means for applications to manage and monitor the deployment intrinsically, building on top of the Remote Service specifications. In the Eclipse Concierge project, we have provided the reference implementations of both specifications. In this talk, we will show how the services can be used to build distributed applications that benefit from the OSGi modularity.
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Abstract: In this talk we will share our experiences in developing a tool chain from classes, to bundles, to containers, to systems.
OSGi and Docker come together in a compelling way where the former provides modularity "in the small" and the latter "modularity in the large". We discover how the unique characteristics of OSGi enable a smooth transition from small to large.
The resulting environment enables developers to grow distributed systems on their local machine and test them with plain JUnit at all levels of granularity - classes to systems. During development OSGi enables the tool chain to update the system without container rebuilds.
While an increase in productivity is one benefit of such an environment, an arguably more important benefit is the way it empowers developers to gain new insights.
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OSGi Community Event 2018 Presentation by Jurgen Albert (Data In Motion Consulting GmbH)
Abstract: OSGi is often conceived as a tool to write efficient Java Applications for resource limited Devices or If resources are a real issue in complex applications. On the other hand Microservices became the buzzword of the cloud and is often implemented using Spring or other Programming languages. OSGi carries the concept of microservices in its core and is therefore much better suited to the task then most other approaches. This talk will show you how a service can be built with a real-worldish use case, leveraging the power of OSGi R7. It will show the combined usage of PushsStreams, the JaxRS Whiteboard, the configurator, remote deployment and a lot of the other cool things OSGi has to offer.
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OSGi Community Event 2018 Presentation by David Bosschaert (Adobe)
Abstract: OSGi lends itself well to develop extensible applications assembled from reusable modules, where a set of bundles together with a set of configurations deployed to a provisioned OSGi framework is the application.
While this works very well for the originally intended use-cases, maintaining and building large applications developed by multiple teams often requires to assemble multiple larger components for which there is limited support in OSGi as of today. This is especially true in cases where multiple groups of bundles, configuration, metadata, and other artifacts need to be combined.
In this talk we will introduce you to OSGi RFP-188, named OSGi Features, which defines the requirements on providing a solution. We'll establish a shared understanding of the problem space and how it relates to already available mechanisms in OSGi (like e.g. subsystems, deploymentadmin, startlevels, etc.) and will subsequently, review it in the context of some of the current (open source) solutions like Apache Karaf Features and Apache Sling Features and Bnd.
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OSGi Community Event 2018 Presentation by Amit Kumar Mondal (Deutsche Telekom AG) & Jochen Hiller (Deutsche Telekom AG)
Abstract: QIVICON is an Eclipse SmartHome based solution from Deutsche Telekom AG. It utilises OSGi to provide a modular Java runtime.
Since the beginning, QIVICON leveraged Eclipse PDE with Maven & Eclipse Tycho as its build technology but over the time, the complexity increased. It became hard to get an overview and manage the runtime and build dependencies. Especially maintaining target configurations for IDE and CI/CD build, having different embedded gateways for installation increased complexity significantly.
Bndtools is the 'swiss army knife' in the context of OSGi development since it takes the nitty-gritty pains and loads off the developer's chest. And that's why we decided to avail the benefits of Bndtools.
But, many other OSGi-based projects still cannot avail the benefits as they are very tightly coupled with Eclipse PDE. Want to make a switch from your existing PDE source base to Bndtools? This talk would give you an overview to proceed towards this.
We would like to further demonstrate in this talk how to set up a Bndtools workspace from an existing PDE workspace, convert all current projects to Bnd projects and embrace the OSGi-way of developing bundles.
Since QIVICON containing more than 350 projects utilised this solution to move to a higher modularity maturity level, this talk would, therefore, outline the pros, cons and the learnings using Bndtools in such a big OSGi project for embedded development.
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OSGi Community Event 2018 Presentation by Ray Augé (Liferay)
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How OSGi drives cross-sector energy management - Jörn Tümmler (SMA Solar Tech...
SMA is an energy equipment supplier that was seeking a solution for cross-sector energy management. They evaluated OSGi and decided to develop their own framework based on OSGi. They encountered several problems initially but overcame them by improving API design, avoiding dependencies, and using helper classes. They have now successfully applied OSGi in their products and find that it defines clean module deployment and versioning while supporting dynamic updates.
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Abstract: During this short presentation I will revisit existing mechanisms and approach towards OSGi and JEE development. I will show how many manual steps can be avoided and how to maintain project in effective manner. I will try to find a balance between execution environment requirements and programmer happines at same time.
I believe that OSGi and Eclipse ecosystem experience troubles gaining people from outside for few reasons. Beside overall impression of OSGi complexity there is equally old and invalid complain about quaility of developer tooling. Since invention of BND development experience can be really pleasant and independent of text editor/IDE preferences. Sadly lots of people still rely on former experiences spreading black/bad PR. I would like to clarify their point.
After this presentation attendees will learn:
How to use Maven to build OSGi projects (without Tycho).
How to automate manual tasks.
How to build custom software distributions with Maven artifacts and run it with Apache Karaf.
That OSGi development doesn't differ much from regular day-to-day usage of application servers or microservice runtimes.
This talk is intended for people who know basics of OSGi as it will show few basic technics towards better developer productivity.
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Abstract: OSGi was originally designed for Smart Homes and Residential Gateways almost 20 years ago.
This talk will present how the OSGi specifications have evolved over the years, and how you today, in 2018, design an OSGi based Smart Home System.
A real world use case of a Swedish Smart Home start-up company will be used to illustrate different design principles and how OSGi remains as relevant today as it was when it started.
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This document discusses how various software design patterns can be applied within the OSGi runtime environment. It describes patterns like Observer/Listener, OSGi Whiteboard, Dependency Injection, Circuit Breaker, and Domain-Driven Design and how they differ or are adapted when used with OSGi. For example, the OSGi Whiteboard pattern allows services and listeners to be loosely coupled without direct dependencies, and OSGi's declarative services specification provides a way to perform dependency injection and manage component lifecycles. The document argues that applying patterns like having microservices per bounded context can help match the original ideas of microservices while minimizing remote communication when using OSGi.
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OSGi Community Event 2018 Presentation by BJ Hargrave (IBM)
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Abstract: Nowadays AI is reaching new heights on the hype cycle, especially due to recent advances in deep learning techniques. A lot of deep learning frameworks exist for creating and training deep neural networks, the most popular ones being PyTorch and TensorFlow. However, how to integrate, deploy and manage these neural networks in complex software systems is often overlooked. In this talk we show how OSGi can be used as a modular runtime for deep learning models. We embed those models inside OSGi bundles, and use the extender pattern to make these available as OSGi services. You can then use your favorite OSGi specs such as DS and PushStreams to integrate these into your application.
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OSGi Community Event 2018 Presentation by Tony Walsh (ESA) & Hristo Indzhov (Telespazio Vega)
Abstract: The European Space Operations Centre (ESOC) is the main operations center for the European Space Agency (ESA), operating a number of earth observation and scientific missions. Monitoring and control functions needed by spacecraft operators are provided by software systems which are reused across missions, but tailored and extended for mission specific needs. The current generation of monitoring and control systems are becoming obsolete and a European wide initiative called the European Ground Systems Common Core (EGS-CC) (http://www.egscc.esa.int) has been started to develop the next generation.
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OSGi Community Event 2018 Presentation by Ray Augé (Liferay)
Abstract: The craze is fully on. The past couple of years have seem micro services grow from next _flava_ to fully consuming of the software industry. The Eclipse micorprofile.io project is tackling the issue putting common usage patterns together over a foundation of CDI. What better assembly driver is there than OSGi to put it all together. This talk will demonstrate building your own MicroProfile using OSGi and the OSGi enRoute packaging model.
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Abstract: Node-RED is often used as a protyping tool for IoT systems. However, there are also a large number of OSGi components that have already been built to interface to devices, sensors and systems. In this talk I will show how two completely different runtime environments (OSGi and Node-RED) can be combined into a single platform for prototyping (and more) combining the strengths of both languages and systems.
Being able to quickly and simply prototype IoT application is extremely useful, and to this end many people have adopted Node-Red, a Node.js based runtime with extensive support for plugins to interface to various IoT hardware and protocols. However, this requires these services/protocols to be developed in Javascript, and there is already a significant body of code developed in Java/OSGi that it would be desirable to re-use.
The talk will explain how it is possible to:
Create and manage a Node-Red runtime from within an OSGi bundle
Share OSGi components and object into the Node-Red runtime
Interact and build Node-Red flows that exchange data and call methods between Node.js and OSGi
This is obviously useful for the original purpose: prototyping IoT systems, but also demonstrates some interesting techniques for bridging between different languages and runtimes.
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OSGi Community Event 2018 Presentation by Dirk Fauth (Bosch)
Abstract: In todays connected world the requirement to connect applications across network boundaries has become a common requirement. With OSGi there are several ways to accomplish this, as there are different specifications to achieve this. In this talk we will look at some of these specifications to show what options there are and which might fit your requirements. Starting from an architecture that makes use of the HTTP Whiteboard pattern, over Remote Services to finally showing the usage of the JAX-RS Whiteboard specification introduced with R7. We will show the general usage of these specifications and explaining the advantages and disadvantages of each solution.
Visualization of OSGi based Software Architectures in Virtual Reality - Lisa ...
OSGi Community Event 2018 Presentation by Lisa Nafeie (DLR)
Abstract: Classic software architecture visualizations such as UML diagrams are widely used in practice but are not always the best solution, for example to get an high level overview of large component-based software systems. In this talk, we show other suitable technologies for software visualization to understand complex software architectures. Especially, we show how to visualize OSGi based software architectures in Virtual Reality (VR) using VR headsets.
We address the question, how software visualizing can help during the development process and what are the resulting benefits for developers and software testers. We focus on four aspects: Development, evaluation, quality assurance, and visualization technology. We demonstrate software visualization using the software ”IslandViz”, which visualizes OSGi based software systems using an island metaphor, where islands on a virtual water level represents OSGi bundles, regions on the islands represents packages, and buildings represents classes. We describe how to get all relevant data for the visualization by repository mining on the whole source tree and data mining on source code level. We store all data in a graph database for further analysis and visualization.
Through software visualization we were able to answer many important questions, which have already taken a lot of time in development and test-phases. In addition, it’s very important to make the software architecture tangible, which makes it easier way to talk about technical problems in teams formed by people with different knowledge, communications skills, and backgrounds.
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OSGi Community Event 2018 Presentation by Tim Ward (Paremus)
Abstract: The model of centralized cloud compute is changing. As large-scale IoT deployments have started to become real organizations are realizing that a single central cloud can’t cope with the data security, data volumes, latency or robustness that they need for their businesses. Centralizing in a single cloud also offers a huge operational risk – if the cloud fails, their business must continue!
This talk will introduce BRAIN-IoT, an EU Horizon 2020 funded project. BRAIN-IoT uses the latest OSGi R7 specifications to create an adaptive modular “Fog” environment with decentralized data processing and decision making. We’ll review the current design decisions made by the BRAIN-IoT team, including the issues concerning generic Edge Device discovery & integration, and see how they can be applied across different IoT use cases, including Smart Utilities and Industry 4.0 Factories of the Future.
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Never a Wrong (Semantic) Version Again! - Ferry Huberts
- 1. Never A Wrong (Semantic) Version Again! bndtools
- 2. About Me ● Ferry Huberts M.Sc. ● Open Source Entrepreneur (pelagic.nl) ● Member of the bnd / bndtools team ● Contributor in several other projects – Like olsrd, cgit 2/14
- 3. Meaning of Semantic se·man·tic adjective si-ˈman-tik Origin of SEMANTIC Greek sēmantikos significant, from sēmainein to signify, mean, from sēma sign, token * From http://www.merriam-webster.com/dictionary. 3/14
- 4. Meaning of Version ver·sion noun ˈvər-zhən, -shən Origin of VERSION Middle French, from Medieval Latin version-, versio act of turning, change, from Latin vertere to turn — more at worth * From http://www.merriam-webster.com/dictionary. 4/14
- 5. Meaning of Semantic Version A Semantic Version is A change with (strict) meaning 5/14
- 8. Premise Semantic Versions are all about (Backward) Compatibility 8/14
- 9. Semantic Version Major.Minor.Micro.Qualifier* ● Major: incompatible change for providers and consumers ● Minor: incompatible change for providers ● Micro: compatible change ● Qualifier: anything (e.g. build identity) * Major, Minor and Micro are numbers, Qualifier is a string 9/14
- 11. Hands-On bndtools The easy, powerful and productive way to develop with OSGi. Based on bnd and Eclipse. 11/14
- 13. Summary ● Semantic Versions: – Theory: ● – Reality: ● ● – conceptually easy not so easy easy to forget to update the multiple places There are some subtleties ● bndtools can handle* it for you ● Never Stop Thinking 13/14 * except for semantic changes not detectable by a machine, like kph to mph renames